Spring Lake township
- County:
- Kingsbury County
- County Seat:
- No
- Area (mi²):
- 79.631
- State:
- South Dakota
Spring Lake township is located in Kingsbury County, South Dakota. Spring Lake township has a 2026 population of 304. Spring Lake township is currently declining at a rate of 0% annually and its population has increased by 1.67% since the most recent census, which recorded a population of 299 in 2020.
The median household income in Spring Lake township is $112,083 with a poverty rate of 10.56%. The median age in Spring Lake township is 37.7 years: 38.7 years for males, and 35.1 years for females. For every 100 females there are 133.3 males.